Printed on the solder side toward the insertion end
Stamped into the face of the aluminum frame
Stamped into the side of the aluminum frame
overall: 1/2 in x 4 1/2 in x 7 in
The object has a green board surrounded by an aluminum board and a blue plastic connector. On one side there are five transistors, seven capacitors, and several resistors. On the solder side there is a printed circuit with a grid lettered A-Z.